. U.S. President Barack Obama (C) and his family walk to the helicopter to depart for travel to Africa from the South Lawn of the White House in Washington, June 26, 2013. Obama\'s weeklong trip to Senegal, Tanzania and South Africa risks being overshadowed by the deteriorating health of South Africa\'s national hero and revered former leader, Nelson Mandela. Also pictured are Obama\'s mother-in-law Marian Robinson (L-R), his niece Leslie Robinson, his daughter Malia, first lady Michelle Obama and daughter Sasha.  REUTERS/Jonathan Ernst
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